Class ArqFunctionFactory

Expression Factory which generates ARQ Function expressions.
Inheritance
System.Object
ArqFunctionFactory
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: VDS.RDF.Query.Expressions
Assembly: dotNetRDF.dll
Syntax
public class ArqFunctionFactory : ISparqlCustomExpressionFactory
Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Fields

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ArqFunctionsNamespace

ARQ Function Namespace.
Declaration
public const string ArqFunctionsNamespace = "http://jena.hpl.hp.com/ARQ/function#"
Field Value
Type Description
System.String
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BNode

Constants for ARQ Graph functions.
Declaration
public const string BNode = "bnode"
Field Value
Type Description
System.String
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E

Constants for ARQ Numeric functions.
Declaration
public const string E = "e"
Field Value
Type Description
System.String
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LocalName

Constants for ARQ Graph functions.
Declaration
public const string LocalName = "localname"
Field Value
Type Description
System.String
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Max

Constants for ARQ Numeric functions.
Declaration
public const string Max = "max"
Field Value
Type Description
System.String
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Min

Constants for ARQ Numeric functions.
Declaration
public const string Min = "min"
Field Value
Type Description
System.String
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Namespace

Constants for ARQ Graph functions.
Declaration
public const string Namespace = "namespace"
Field Value
Type Description
System.String
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Now

Constants for ARQ Miscellaneous functions.
Declaration
public const string Now = "now"
Field Value
Type Description
System.String
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Pi

Constants for ARQ Numeric functions.
Declaration
public const string Pi = "pi"
Field Value
Type Description
System.String
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Sha1Sum

Constants for ARQ Miscellaneous functions.
Declaration
public const string Sha1Sum = "sha1sum"
Field Value
Type Description
System.String
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StrJoin

Constants for ARQ String functions.
Declaration
public const string StrJoin = "strjoin"
Field Value
Type Description
System.String
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Substr

Constants for ARQ String functions.
Declaration
public const string Substr = "substr"
Field Value
Type Description
System.String
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Substring

Constants for ARQ String functions.
Declaration
public const string Substring = "substring"
Field Value
Type Description
System.String

Properties

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AvailableExtensionAggregates

Gets the Extension Aggregate URIs supported by this Factory.
Declaration
public IEnumerable<Uri> AvailableExtensionAggregates { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<System.Uri>
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AvailableExtensionFunctions

Gets the Extension Function URIs supported by this Factory.
Declaration
public IEnumerable<Uri> AvailableExtensionFunctions { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<System.Uri>

Methods

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TryCreateExpression(Uri, List<ISparqlExpression>, Dictionary<String, ISparqlExpression>, out ISparqlExpression)

Tries to create an ARQ Function expression if the function Uri correseponds to a supported ARQ Function.
Declaration
public bool TryCreateExpression(Uri u, List<ISparqlExpression> args, Dictionary<string, ISparqlExpression> scalarArgs, out ISparqlExpression expr)
Parameters
Type Name Description
System.Uri u Function Uri.
System.Collections.Generic.List<ISparqlExpression> args Function Arguments.
System.Collections.Generic.Dictionary<System.String, ISparqlExpression> scalarArgs Scalar Arguments.
ISparqlExpression expr Generated Expression.
Returns
Type Description
System.Boolean Whether an expression was successfully generated.

Implements

Extension Methods